The three Democrats running to unseat U.S. Sen. Pat Toomey, R-Lehigh Valley, tried to differentiate themselves during an hourlong debate Tuesday at WTAE-TV's Wilkinsburg studio, highlighting what they'd do differently to improve life for Pennsylvanians.

The new Harper poll finds just 12 percent of Pennsylvania Democrats undecided with the election just about three weeks away.

A Harper poll released this week showed Clinton leading Sanders by 22 percentage points (55-33 percent), with 12 percent undecided, ahead of the state's April 26 primary.

The latest poll of Democratic voters in Pennsylvania shows that Bernie Sanders has a lot of ground to cover in the Keystone State.

Montgomery County Commission Chair Josh Shapiro has emerged as the leader in the Democratic primary for state attorney general, according to a recent poll by Harper Polling.

Whether the latest Harper Polling numbers on Pennsylvania’s U.S. Senate race favor Joe Sestak or Katie McGinty depends a lot upon perspective.

Josh Shapiro has opened up a double-digit lead over his challengers for the Democratic nomination for Attorney General, the latest Harper Poll shows.

The Senate Democratic primary is up in the air but Sestak has the advantage.

A Harper Polling survey released Tuesday found Clinton taking 55 percent over Sanders at 33 percent, with 12 percent undecided.

The Harper Polling survey of likely Democratic voters found that Clinton is backed by 55% of those who are likely to show up on election day, compared to just 33% for Sanders.

Republicans have more than a dozen candidates ranging from little recognized to completely unknown competing for the prize of challenging Democratic Sen. Michael Bennet in the fall.

“It's still anybody's race. Sestak is by no means so far ahead that no one can catch him,” said Brock McCleary, president of Harper Polling.

Republicans wondering how a Donald Trump ticket might actually affect down-ballot races just got their wake-up call.

The good news is that, despite the budget stalemate, his own favorability ratings have been stable. The bad news is that Pennsylvanians feelings about the state have not been.

In the most recent Harper Poll, likely primary voters on both sides of the aisle were asked “What do you think is holding our country back more: abuse of power on Wall Street OR growth of government and regulations?”

There’s good news and bad news for Governor Wolf.

Hillary Clinton and Donald Trump are leading the field among Pennsylvania Democrats and Republicans respectively.

Louisiana voters don’t like the idea of sales tax or income tax hikes.

In a January poll conducted by Harper Polling, Pennsylvania voters in the Democratic primary for Attorney General were narrowly split between Zappala and Shapiro.

Yet another late survey from Harper Polling has Trump ahead handily.